Czechoslovakia then split into Slovakia and the Czech Republic on Jan 1, 1993. This was because the Soviet Union had collapsed in 1991.

2. Central Asia countries

Kyrgyzstan, Kazakhstan, Uzbekistan, Turkmenistan and Tajikistan are found in Central Asia. They all have the suffix- istan, which means land in Persian. The prefix refers to the dominant ethnic group in the country.

4. Liechtenstein

Sandwiched between Switzerland and Austria, Liechtenstein is dwarfed by its neighbours in size.

The country gets its name from the ruling dynasty, the princely house of Liechtenstein. The first member of this house, Hugo von Liechtenstein named his line after the Liechtenstein castle that he built in 1130 in Austria.

The name Liechtenstein is German, with "licht" meaning light and "stein" meaning stone.

Liechtenstein (lɪktənstaɪn) is pronounced LIK-tin-styn or click here to listen to its pronunciation.

5. Reykjavik, Iceland

The capital of Iceland, Reykjavik is derived from the Icelandic word "reykja", which means smoky. This is a reference to the many hot springs in the city.

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